Incandescent-lighting apparatus.



e. -DALEN -INCANUESCENT LIGHTING APPARATUS.

APPLicATloN man JULY e. 191s.

patented Mar. 19, 1918.

/n ven Cor.'-

narran estaras rarnnr ernten.

GUSTAF DALN, or ASTOCKHOLM, SWEDEN.

INCANDESCENT-LI G-HTING APPARATUS.

Application led July 6, 1916.

To all whom t may concern:

Be it known that 1, Gus'rar DALN, engineer, a subject of the King of Sweden, residing at Slrrstra, Lidingn, Stockholm, Sweden, have invented certain new and useful Improvements in incandescent-Lighting Apparatus, of whichv the following is a specification.

The present invention relates to incandescent lighting means and has for object to provide an improved arrangen'ient of incandescent body formed as a disk, cylinder or thc like, which is made incandescent or caused to glow by means of a flame in a burner located in front o'f the incandescent body. Under the influence of the flame such an incandescent body is gradually worn on the spotwhere the flame strikes the incandescent body, so that a small excavation or hole is formed which acts prejudicially on the escape of the combustion products, as also on the uniform distribution of the light radiating from the incandescent body. When the excavation or hole is sufficiently deep the incandescent body bursts and must be exchanged for another without the mass of the incandescent body having been utilized for generating light on more than one single spot.

These inconveniences are avoided by means of the present invention according to which the incandescent body or its burner is put in motion automatically in such a manner that the wear above mentioned, owing to the iniiuence of the flame on the incandescent body, is distributed almost over the Whole surface of the incandescent body. Said motion of the incandescent body or the burner may be imparted by means of mechanism actuated by a diaphragm apparatus in which the admission and escape of gas is controlled by an automatically working valve. Preferably the gas admission to the diaphragm casing of such apparatus is made dependent upon the gas admission to the burner of the incandescent body. The motion of the incandescent body or of the burner may be rectilinear in some cases.

The accompanying drawing illustrates a construction of apparatus according to the invention.

Figure 1 shows the apparatus partly in vertical section and partly in elevation.

Fig. 2 is a side view of the apparat-us.

Specification of Letters Patent.

Patented Mar. 19, 1918.

Serial No. 107,841.

l indicates the gas admission pipe of a burner 2 arranged in front of an incandescent body formed as a disk 3.

The holder 4 of the incandescent body 3 is mounted in a support 6 on a shaft 5 which is caused to rotate intermittently by suitable mechanism actuated by the diaphragm 11 oi the diaphragm apparatus 7.

In the construction shown the automatic valve 8 of the diaphragm apparatus coutrols the conduit 9 for gas escaping from the diaphragm casing 7, said valve having the form of a plate, movable on edges 1S, fixed on the diaphragm casing. Gas is admitted to the casing through an inlet conduit 10, said admission being adjusted by means of the screw valve 19.

1V hen the gas pressure on the diaphragm 11 of the diaphragm apparatus overcomes the pressure of the spring 12 on said diaphragm the diaphragm 11 moves upward and carries with it the valve plate 8 by means of the bow 2O fixed on the diaphragm 11 and coperating with a bow 21 on the valve plate 8, so that the valve 8 opens the gas outlet conduit 9 whereupon the pressure sinks in the diaphragm casing so that the outlet finally is closed by pressure of the spring 12, acting upon the diaphragm 11 and the bow connection 20, 21 between said diaphragm and the valve plate 8. From the valve 8 projects for the purpose of operating the incandescent body a rod 1S which is liXed on the diaphragm 11 and at its'upper end carries a pawl 15 that engages a ratchet wheel 16 on the shaft 5. 17 is a retaining or counter pawl.

Corresponding to the movement of the diaphragm 11 the ratchet wheel 16 is driven step by step and thereby imparts to the holder t of the incandescent body and the incandescent body 3 a step by step rotary movement so that the flame of the burner 2 constantly plays upon fresh parts of said incandescent body whereby the disadvantages hereinbefore referred to are obviated.

By connecting the admission pipe 10 with the burner conduit 1, as indicated in dotted lines, the additional advantage is gained, that the operation of the diaphragm apparatus 7 is made dependent upon the flame of the burner 2 so that the diaphragm apparatus is put in motion when gas is admitted to the conduit 1 through the cock 22 for lighting the Haine, and is put out of operation when the gas is shut off from the conduit l for extinguishing the flame. In such an arrangement the flame, when lighted, will begin to act upon the incandescent body 3 on the same place as that on which it finished its action on the incandescent body When the flame was extinguished, whereby a more uniform wear of the incandescent body is eli'ected.

In order to utilize the largest possible portion of the mass of the incandescentl body the flame should of course act upon the Vincandescent body, when in form of' a disk, between the center of the incandescent body and its periphery.

While I have herein described a preferred embodiment of my invention it is under- Vstood that in practising my invention I do not limit myself to this form but may make such changes in the mechanism for moving theincandescent body and in the movement and shape of the incandescentbody may seem desirable providing that the same fall Within the scope of the invention as defined in the appendedclaims.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed I declare that what I claim is:

1,' In incandescent lighting apparatus, an incandescent body, a burner the flame of which is adapted to render said body incandescent, and means controlled by the fion7 of` gas foi-,presenting different parts of' the incandescent body to the action of the burner during light-ing.

In incandescent lightingl apparatus an incandescent body, a burner the flame of Which is adapted to render said body incandescent, and lneans controlled by the flow of gas for rotating said body during light-A `ing.

3. In incandescent lighting apparatus an incandescent b0dy,a burner the iiame of which is adapted to render said body incandescent, an automatic gas operated diaphragm apparatus, and aconnection be able members of said apparatus and the incandescent body, and a gas supply to said apparatus connected with the gas supply to the burner.

In incandescent lighting apparatus an y incandescent body, and means automatically rotating said body under the control'of' the gas flovv during lighting.

G. In incandescent lighting apparatus an incandescent body, and means automatically and intermittently rotating said body during lighting under the control of the gas flow. A,

7. In incandescent lighting apparatus, an incandescent body, a burner, the flame of' which is adapted to render said body incandescent, land means, controlled by the flow of gas, comprising an automatic gas operated apparatus, for rotating the incandes# cent body during lighting.

In testimony whereof I have affixed my signature in presence of two witnesses.

GUSTAF DALEN. lVitnesses:

GRETA PRIM, SALLY YADE.

Ucpies of this patent may be obtained for five cents each, by addressing the Commissioner oflatents, Y

Washington, D. C. 

